<template>
  <div id="aCoursesList" class="bg-fa of">
    <!-- 课程详情 开始 -->
    <section class="container">

      <!-- 课程科目 -->
      <section class="path-wrap txtOf hLh30">
        <!--        <a href="/" title class="c-999 fsize14">首页</a>-->
        <!--        <svg-icon icon-class="right-arrow"/>-->
        <a href="/course" title class="c-999 fsize14">课程列表</a>
        <svg-icon icon-class="right-arrow"/>
        <a :href="'/course?subjectParentId='+course.primarySubjectId" class="c-333 fsize14">
          {{ course.primarySubject }}
        </a>
        <svg-icon icon-class="right-arrow"/>
        <a :href="'/course?subjectParentId='+course.primarySubjectId+'&subjectId='+course.secondarySubjectId"
           class="c-333 fsize14">
          {{ course.secondarySubject }}
        </a>
      </section>
      <!-- 课程基本信息 -->
      <div>
        <article class="c-v-pic-wrap" style="height: 357px;">
          <!-- 课程封面 -->
          <section id="videoPlay" class="p-h-video-box">
            <img :src="course.cover" :alt="course.title" class="dis c-v-pic">
          </section>
        </article>
        <aside class="c-attr-wrap">
          <section class="ml20 mr15">
            <!-- 课程标题 -->
            <h2 class="hLh30 txtOf mt30">
              <span class="c-fff fsize24">{{ course.title }}</span>
            </h2>
            <!-- 课程价格 -->
            <section class="c-attr-jg">
              <span class="c-fff fsize14 mr10">价格 </span>
              <b v-if="Number(course.price)===0" class="c-green fsize24">限时免费</b>
              <b v-else class="c-yellow" style="font-size:24px;">￥{{ course.price }}</b>
            </section>
            <!-- 课程讲师 -->
            <section class="c-attr-mt c-attr-undis">
              <span class="c-fff fsize16 mr15">讲师</span>
              <span class="c-fff fsize20">{{ course.teacherName }}</span>
            </section>
<!--            <section class="c-attr-mt of" style="margin-left: -10px">-->
<!--              <span v-if="isCollect" class="ml10 vam sc-end">-->
<!--                <span-->
<!--                  style="cursor:pointer"-->
<!--                  class="vam fsize16 c-red fbold"-->
<!--                  @click="removeCollect(course.id)"-->
<!--                >-->
<!--                  <svg-icon icon-class="star-smile"/>-->
<!--                  移出心愿单-->
<!--                </span>-->
<!--              </span>-->
<!--              <span v-else class="ml10 vam">-->
<!--                <span-->
<!--                  style="cursor:pointer"-->
<!--                  class="vam fsize16 c-fff fbold"-->
<!--                  @click="addCollect(course.id)"-->
<!--                >-->
<!--                  <svg-icon icon-class="star-smile">收藏</svg-icon>-->
<!--                  加入心愿单-->
<!--                </span>-->
<!--              </span>-->
<!--            </section>-->
            <div class="buy-btn">
              <section v-if="isBuy" class="c-attr-mt">
                <a
                  href="javascript:void(0)"
                  title="已购买"
                  class="comm-btn c-btn-3">已购买
                </a>
              </section>
              <section v-else-if="course.price === 0" class="c-attr-mt">
                <a
                  href="javascript:void(0)"
                  title="免费学习"
                  class="comm-btn c-btn-3">免费学习
                </a>
              </section>
              <section v-else class="c-attr-mt">
                <a
                  href="javascript:void(0)"
                  title="立即购买"
                  class="comm-btn c-btn-3"
                  @click="createOrder()">立即购买</a>
              </section>

            </div>
          </section>
        </aside>
        <aside class="thr-attr-box">
          <ol class="thr-attr-ol">
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">课时数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{ course.lessonNum }}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">浏览数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{ course.viewCount }}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">购买数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{ course.buyCount }}</h6>
              </aside>
            </li>
          </ol>
        </aside>
        <div class="clear"/>
      </div>
      <!-- 课程详情 -->
      <div class="mt20 c-infor-box">
        <article class="fl col-7">
          <section class="mr30">
            <div class="i-box">
              <div>
                <section id="c-i-tabTitle" class="c-infor-tabTitle c-tab-title">
                  <a name="c-i" class="current" title="课程详情">课程详情</a>
                </section>
              </div>
              <article class="ml10 mr10 pt20">
                <!-- 课程介绍 -->
                <div>
                  <h6 class="c-i-content c-infor-title">
                    <span>课程介绍</span>
                  </h6>
                  <div class="course-txt-body-wrap">
                    <section class="course-txt-body" v-html="course.description"/>
                  </div>
                </div>
                <!-- 课程大纲 -->
                <div class="mt50">
                  <h6 class="c-g-content c-infor-title">
                    <span>课程大纲</span>
                  </h6>
                  <section class="mt20">
                    <div class="lh-menu-wrap">
                      <menu id="lh-menu" class="lh-menu mt10 mr10">
                        <ul>
                          <!-- 课程章节目录 -->
                          <li v-for="chapter in chapterList" :key="chapter.id" class="lh-menu-stair">
                            <a title="chapter.title" href="javascript: void(0)" class="current-1">
                              <em class="lh-menu-i-1 icon18 mr10"/>{{ chapter.title }}
                            </a>
                            <ol class="lh-menu-ol" style="display: block;">
                              <li v-for="video in chapter.children" :key="video.id" class="lh-menu-second ml30">
                                <!-- 视频可以看的情况下 -->
                                <div v-if="isBuy || course.price === 0 || video.free === true">
                                  <a
                                    v-if="video.videoSourceId === null || video.videoSourceId === ''"
                                    :title="video.title">
                                    <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{ video.title }}
                                    <i class="novideo-icon vam mr10">暂无视频</i>
                                  </a>
                                  <a
                                    v-else-if="video.free === true"
                                    :href="'/player/'+video.videoSourceId"
                                    :title="video.title"
                                    target="_blank">
                                    <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{ video.title }}
                                    <i class="free-icon vam mr10">免费试听</i>
                                  </a>
                                  <a
                                    v-else
                                    :href="'/player/'+video.videoSourceId"
                                    :title="video.title"
                                    target="_blank">
                                    <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{ video.title }}
                                  </a>
                                </div>
                                <a
                                  v-else
                                  :title="video.title">
                                  <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{ video.title }}
                                </a>
                              </li>
                            </ol>
                          </li>
                        </ul>
                      </menu>
                    </div>
                  </section>
                </div>
              </article>
            </div>
          </section>
        </article>
        <aside class="fl col-3">
          <div class="i-box">
            <!-- 讲师介绍 -->
            <div>
              <section class="c-infor-tabTitle c-tab-title">
                <a title href="javascript:void(0)">讲师介绍</a>
              </section>
              <section class="stud-act-list">
                <ul style="height: auto;">
                  <li>
                    <div class="u-face">
                      <a :href="'/teacher/'+course.teacherId" target="_blank">
                        <img :src="course.avatar" width="50" height="50" alt>
                      </a>
                    </div>
                    <section class="hLh30 txtOf">
                      <a :href="'/teacher/'+course.teacherId" class="c-333 fsize16 fl"
                         target="_blank">{{ course.teacherName }}</a>
                    </section>
                    <section class="hLh20 txtOf">
                      <span class="c-999">{{ course.style }}</span>
                    </section>
                  </li>
                </ul>
              </section>
            </div>
          </div>
        </aside>
        <div class="clear"/>
      </div>
    </section>
  </div>
</template>

<script>
import courseApi from '~/api/course'
import orderApi from '~/api/order'
//import collectApi from '~/api/collect'
import cookie from 'js-cookie'

export default {

  async asyncData(page) {
    const response = await courseApi.queryInfoById(page.route.params.id)
    return {
      course: response.data.course,
      chapterList: response.data.chapterList
    }
  },
  data() {
    return {
      isBuy: false, // 是否购买
      isCollect: false, // 是否已收藏
      list: []
    }
  },
  created() {
    // 如果未登录,isBuy是默认值false
    // 如果已登录,isBuy通过远程接口的返回值赋值
    const token = cookie.get('hsedu_jwt_token')
    if (token) {
      orderApi.isPaid(this.course.id).then(response => {
        this.isBuy = response.data.isBuy
      })
      // // 判断是否收藏
      // collectApi.isCollect(this.course.id).then(response => {
      //   this.isCollect = response.data.isCollect
      // })
    }
  },
  methods: {
    // 下订单
    createOrder() {
      orderApi.insert(this.course.id).then(response => {
        // 跳转到订单预览页面
        this.$router.push({ path: '/order/' + response.data.orderId })
      })
    }
    //
    // // 收藏
    // addCollect(courseId) {
    //   collectApi.addCollect(this.course.id).then(response => {
    //     this.isCollect = true
    //     this.$message.success(response.message)
    //   })
    // },
    //
    // // 取消收藏
    // removeCollect(courseId) {
    //   collectApi.removeById(this.course.id).then(response => {
    //     this.isCollect = false
    //     this.$message.success(response.message)
    //   })
    // }
  }
}
</script>

<style>
.course-txt-body ol, .course-txt-body ul {
  padding-left: 40px;
  margin: 16px 0;
}

.course-txt-body ol li {
  list-style: decimal;
}

.course-txt-body ul li {
  list-style: disc;
}
.buy-btn{
  margin-top: 70px;
}
</style>

